Abstract:

It’s an important part in the process of designing blades of finite element checking and analysing,finite element modeling of blades is very cumbersome because of the complexity of the shape and structure.With finite element software ANSYS,this paper describes in detail the process of finite element modeling of largescale wind turbine blades by means of the length blade of 750kW wind turbine,some suggestions of modeling methods are put forward.In the course of modeling,the method which from down to up is adopted to build blade’s entity model,shell elements of SHELL91 and SHELL99 are combined with real constants is used to model the composite laminate structure through gridassignment and elementassignment during meshing.By setting the parameters of SHELL91,the “sandwich” characteristics can model the sandwich structure of blades.It’s the basis of finite element modeling for designing largescale wind turbine blades or analysing and checking.

Key words: wind turbine blade, ANSYS, finite element modeling